CN216437209U

CN216437209U - Substation automation device and system

Info

Publication number: CN216437209U
Application number: CN202121826114.3U
Authority: CN
Inventors: 王冲; 陈茂树; 张立卓; 齐洁莹; 张明智; 王抒阅
Original assignee: State Grid Corp of China SGCC; Zaozhuang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Zaozhuang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-05-03
Anticipated expiration: 2031-08-05

Abstract

The utility model provides a substation automation device and a substation automation system, which comprise a signal conversion module, a remote communication module and a data processing module which are sequentially connected, wherein the signal conversion module receives an operation instruction issued by a designated associated terminal and converts the operation instruction into a first level signal; the remote communication module receives the first level signal and sends first control data corresponding to the first level signal to the data processing module; the data processing module executes a task corresponding to the first control data; the data processing module also generates execution result data of the tasks; the remote communication module receives the execution result data and sends a second level signal corresponding to the execution result data to the signal conversion module; the signal conversion module also converts the second level signal into a result feedback instruction and sends the result feedback instruction to the appointed associated terminal. The utility model can effectively improve the processing efficiency of the abnormity of the automation device and can also improve the online rate of the automation device.

Description

Substation automation device and system

Technical Field

The utility model relates to the technical field of automatic control, in particular to a substation automation device and a substation automation system.

Background

At present, more and more automatic equipment are used in a transformer substation, and various transformer substation automatic devices such as a remote machine and an electric energy acquisition terminal transmit service data to a regulation and control master station in real time. Automation devices are often taken offline due to crashes, program runs, and external power source disturbances. After the equipment is disconnected, data cannot be transmitted to the master station, so that huge hidden danger is brought to the operation of a power grid, and even the power grid is out of control. At present, after the automatic equipment is disconnected, a dispatching automation worker needs to inform a maintenance worker to go to a station for processing, so that the process not only takes a long time, but also seriously influences the online rate index of the equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a substation automation device and a system, which can effectively improve the processing efficiency of the automation device abnormity and can also improve the online rate of the automation device.

In a first aspect, an embodiment of the present invention provides a substation automation device, including a signal conversion module, a remote communication module, and a data processing module, which are connected in sequence, where the signal conversion module is in communication connection with a designated associated terminal; the signal conversion module is used for receiving an operation instruction issued by the appointed associated terminal, converting the operation instruction into a first level signal and sending the first level signal to the remote communication module, wherein the operation instruction at least comprises a restart instruction; the remote communication module is used for receiving the first level signal and sending first control data corresponding to the first level signal to the data processing module; the data processing module is used for receiving the first control data and executing tasks corresponding to the first control data, wherein the tasks at least comprise a restart task; the data processing module is also used for generating execution result data of the task and sending the execution result data to the remote communication module; the remote communication module is used for receiving the execution result data and sending a second level signal corresponding to the execution result data to the signal conversion module; the signal conversion module is further configured to receive the second level signal, convert the second level signal into a result feedback instruction, and send the result feedback instruction to the designated associated terminal.

In one embodiment, the signal conversion module comprises a data interface, a voltage conversion chip and a PHY chip which are connected in sequence; the data interface is used for receiving an operation instruction issued by the appointed associated terminal; the voltage conversion chip is used for increasing the transmission distance of the operation instruction; the PHY chip is used for converting the operation instruction into a first level signal and sending the first level signal to the remote communication module; the PHY chip is further configured to receive the second level signal and convert the second level signal into a result feedback instruction; the voltage conversion chip is also used for increasing the transmission distance of the result feedback instruction; and the data interface is used for sending the result feedback instruction to the appointed associated terminal.

In one embodiment, the data interface includes an RJ45 interface.

In one embodiment, the telecommunications module includes an ET1200 ethernet chip; the ET1200 ethernet chip is configured to analyze the first level signal to obtain first control data.

In one embodiment, the ET1200 ethernet chip is configured with an AES encryption algorithm; the ET1200 ethernet chip is further configured to encrypt the execution result data using the AES encryption algorithm to obtain a second level signal.

In one embodiment, the data processing module comprises an ARM chip and a peripheral circuit connected with the ARM chip, wherein the peripheral circuit comprises at least one relay; the signal conversion module is also used for receiving a state query instruction issued by the appointed associated terminal, converting the state query instruction into a third level signal and sending the third level signal to the remote communication module; the remote communication module is used for receiving the third level signal and sending second control data corresponding to the third level signal to the data processing module; the data processing module is used for receiving the second control data and determining the current state of the relay corresponding to the second control data; the data processing module is also used for generating relay state data corresponding to the current state and sending the relay state data to the remote communication module; the remote communication module is used for receiving the relay state data and sending a fourth level signal corresponding to the relay state data to the signal conversion module; the signal conversion module is further configured to receive the fourth level signal, convert the fourth level signal into a state feedback instruction, and send the state feedback instruction to the designated associated terminal.

In one embodiment, the substation automation device further comprises a storage circuit connected to the ET1200 ethernet chip for storing the first control data and/or the execution result data.

In one embodiment, the substation automation device further includes a clock source connected to the ET1200 ethernet chip, and the clock source is configured to provide a clock pulse signal to the ET1200 ethernet chip.

In one embodiment, the substation automation device further comprises a power indicator light connected to the data processing module.

In a second aspect, an embodiment of the present invention further provides a substation automation system, which includes the substation automation device provided in any one of the foregoing first aspects, and a designated association terminal communicatively connected to the substation automation device.

The utility model provides a substation automation device and a system, which comprise a signal conversion module, a remote communication module and a data processing module which are sequentially connected, wherein the signal conversion module is in communication connection with a specified associated terminal; the signal conversion module is used for receiving an operation instruction issued by a designated associated terminal, converting the operation instruction into a first level signal and sending the first level signal to the remote communication module, wherein the operation instruction at least comprises a restart instruction; the remote communication module is used for receiving the first level signal and sending first control data corresponding to the first level signal to the data processing module; the data processing module is used for receiving the first control data and executing tasks corresponding to the first control data, wherein the tasks at least comprise a restart task; the data processing module is also used for generating execution result data of the tasks and sending the execution result data to the remote communication module; the remote communication module is used for receiving the execution result data and sending a second level signal corresponding to the execution result data to the signal conversion module; the signal conversion module is also used for receiving the second level signal, converting the second level signal into a result feedback instruction and sending the result feedback instruction to the appointed associated terminal. According to the substation automation device and the system, tasks such as restarting and the like of the substation automation device can be remotely controlled through the signal conversion module, the remote communication module and the data processing module, and compared with a mode that in the prior art, a dispatching automation worker notifies a maintenance worker to go to a station for processing, the processing efficiency of abnormity of the automation device can be effectively improved, and the online rate of the automation device can be improved.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a substation automation device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another substation automation device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another substation automation device according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating device characteristics of a substation automation device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a substation automation system according to an embodiment of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

At present, the Power management of station end network equipment and other equipment lacks effective monitoring means, station end equipment Power supply generally leads to terminal row or PDU (Power Distribution Unit) by the empty division of screen cabinet, then equipment directly connects electricity, the unable Power consumption condition of monitoring equipment of master station side also can't long-range station end equipment Power consumption that resets, after automation equipment drops the line, need inform maintainer by the automatic personnel of dispatch and go to the in-station processing, this process not only will spend time longer, and the online rate index of equipment is seriously influenced. Because the station end equipment has the abnormal conditions of remote access and management and control, most of the abnormal conditions are solved by restarting the equipment from an operation and maintenance team to a field, the time consumed in the middle is very long, and the field manual operation is easy to misoperation.

To facilitate understanding of the present embodiment, a substation automation device disclosed in the present embodiment will be described in detail. Referring to fig. 1, a schematic structural diagram of a substation automation device includes a signal conversion module 110, a remote communication module 120, and a data processing module 130, which are connected in sequence, where the signal conversion module 110 is communicatively connected to a designated associated terminal, and an application program may be configured in the designated associated terminal, and a user may send an operation instruction to the substation automation device through the application program.

In an embodiment, the signal conversion module 110 is configured to receive an operation instruction issued by a specific associated terminal, convert the operation instruction into a first level signal, and send the first level signal to the remote communication module 120, where the operation instruction at least includes a restart instruction, and may further include a relay control instruction and the like. In practical applications, the operation instruction issued by the designated associated terminal is usually an analog signal, and in order to enable the remote communication module 120 and the data processing module 130 to implement corresponding functions for the operation instruction, the signal conversion module 110 is required to convert the analog signal into a digital signal, so as to obtain the first level signal, and send the first level signal to the remote communication module 120.

In one embodiment, the remote communication module 120 is configured to receive the first level signal and send first control data corresponding to the first level signal to the data processing module 130. In practical applications, after receiving the first level signal, the remote communication module 120 maps the first level signal to a logic address, so as to analyze first control data corresponding to the first level signal, and send the first control data to the data processing module 130.

In an embodiment, the data processing module 130 is configured to receive the first control data and execute a task corresponding to the first control data, where the task at least includes a restart task. In addition, the data processing module 130 is further configured to generate execution result data of the task and send the execution result data to the remote communication module 120. For example, when the operation instruction is a restart instruction, the data processing module executes the restart operation, generates corresponding execution result data after the restart operation is completed, where the execution result data is used to represent an execution result of the restart task, and sends the execution result data to the remote communication module 120, so as to feed back the result execution data to the designated associated terminal through the remote communication module 120 and the signal conversion module 110.

In addition, the remote communication module 120 is configured to receive the execution result data and send a second level signal corresponding to the execution result data to the signal conversion module 110. In practical applications, in order to improve the security of data transmission, an AES (Advanced Encryption Standard) Encryption algorithm may be configured in the telecommunication module, and the received execution result data is encrypted to obtain a second level signal, and the second level signal is sent to the signal conversion module 110.

In addition, the signal conversion module 110 is further configured to receive the second level signal, convert the second level signal into a result feedback instruction, and send the result feedback instruction to the designated associated terminal. In practical applications, the second level signal received by the signal conversion module 110 is a digital signal, and needs to be converted into an analog signal, and a result feedback instruction can be obtained after the conversion.

According to the substation automation device provided by the embodiment of the utility model, tasks such as restarting and the like of the substation automation device can be remotely controlled through the signal conversion module, the remote communication module and the data processing module, and compared with a mode that in the prior art, a dispatching automation worker notifies a maintenance worker to go to a station for processing, the substation automation device provided by the embodiment of the utility model can effectively improve the processing efficiency of abnormity of the automation device and can also improve the online rate of the automation device.

To facilitate understanding of the substation automation device provided in the above embodiment, the embodiment of the present invention provides a specific structure of the substation automation device, referring to a schematic structural diagram of another substation automation device shown in fig. 2, fig. 2 illustrates that the signal conversion module 110 includes a data interface 111, a voltage conversion chip 112, and a PHY (Physical Layer) chip 113, which are connected in sequence. The data interface 111 may be an RJ45(Registered Jack 45) interface.

Optionally, the data interface 111 is configured to receive an operation instruction issued by a designated associated terminal, the voltage conversion chip 112 is configured to increase a transmission distance of the operation instruction, and the PHY chip 113 is configured to convert the operation instruction into a first level signal and send the first level signal to the remote communication module 120. In practical applications, the Input/Output (IO) data (i.e., the operation command) is converted into an MI interface level signal (i.e., the first level signal) through the data interface 111, the voltage conversion chip 112, and the PHY chip 113, and then transmitted to the remote communication module 120.

In addition, after the task is executed, the PHY chip 113 is further configured to receive a second level signal, and convert the second level signal into a result feedback instruction; the voltage conversion chip 112 is further configured to increase a transmission distance of the result feedback instruction; the data interface 111 is configured to send the result feedback instruction to the designated associated terminal.

With continued reference to fig. 2, fig. 2 further illustrates that the remote communication module includes an ET1200 ethernet chip, the first level signal is sent to the ET1200 ethernet chip, and the ET1200 ethernet chip is configured to analyze the first level signal to obtain first control data, in an embodiment, a physical address of a node of an MI interface level signal transmitted to the ET1200 ethernet chip is mapped to a logical address by an FMU (FLASH Management Unit) bus register Management Unit of the ET1200 ethernet chip, so as to obtain the first control data. In addition, the ET1200 ethernet chip is configured with an AES encryption algorithm, and the ET1200 ethernet chip is further configured to encrypt the execution result data by using the AES encryption algorithm to obtain a second level signal, thereby improving the security of data transmission.

With continued reference to fig. 2, fig. 2 further illustrates that the data processing module 130 includes an ARM (Advanced RISC Machine) chip and a peripheral circuit connected to the ARM chip, wherein the peripheral circuit includes at least one relay. In one embodiment, the application program may issue a status query command to query the on/off status of the relay. Specifically, the signal conversion module 110 is further configured to receive a status query instruction issued by an appointed associated terminal, convert the status query instruction into a third level signal, and send the third level signal to the remote communication module 120; the remote communication module 120 is configured to receive the third level signal and send second control data corresponding to the third level signal to the data processing module 130; the data processing module 130 is configured to receive the second control data and determine a current state of the relay corresponding to the second control data.

In addition, the data processing module 130 is further configured to generate relay status data corresponding to the current status, and send the relay status data to the remote communication module 120; the remote communication module 120 is configured to receive the relay status data and send a fourth level signal corresponding to the relay status data to the signal conversion module 110; the signal conversion module 110 is further configured to receive the fourth level signal, convert the fourth level signal into a state feedback instruction, and send the state feedback instruction to the designated associated terminal.

With continued reference to fig. 2, fig. 2 further illustrates that the substation automation device further includes a storage circuit 140 connected to the ET1200 ethernet chip, the storage circuit is also an EPROM (electrically Programmable Read Only Memory) circuit, and the storage circuit 140 is configured to store the first control data and/or the execution result data, and may also be configured to store the second control data and/or the relay state data.

With continued reference to fig. 2, fig. 2 further illustrates that the substation automation device further includes a clock source 150 connected to the ET1200 ethernet chip, and the clock source 150 is configured to provide a clock pulse signal for the ET1200 ethernet chip.

On the basis of the foregoing embodiments, an embodiment of the present invention provides a structural schematic diagram of another substation automation device shown in fig. 3, where fig. 3 illustrates that the substation automation device further includes a power indicator connected to the data processing module. In particular, fig. 3 also illustrates that the substation automation device comprises: (1) a state quantity input terminal; (2) a state quantity output terminal; (3) an Ethernet port; (4) a power indicator light; (5) a power input terminal; (6) an ARM chip; (7) ET1200 ethernet chip. In an alternative implementation, the equipment characteristics of the substation automation device provided by the embodiment of the present invention are shown in fig. 4.

For the transformer substation automation device, an industrial-grade design scheme is adopted, a 32-bit ARM processor and a 10/100M Ethernet network scheme are carried, and the transformer substation automation device has the characteristics of high speed, strong computing capability, high stability, strong anti-interference capability and the like, and comprises an ARM chip and a peripheral circuit thereof, an ET1200 Ethernet chip, an EPROM circuit and an Ethernet signal level conversion circuit, input IO data are converted into MI interface level signals through an RJ45 interface, a voltage conversion chip and a PHY chip in sequence and then are transmitted to the ET1200 Ethernet chip, a node physical address of the MI interface level signals transmitted to the ET1200 Ethernet chip is mapped to a logic address by an FMU bus register management unit of the ET1200 Ethernet chip, and the MI interface level signals mapped by the ET1200 Ethernet chip are output through the ARM chip and the peripheral circuit thereof.

To facilitate understanding of the substation automation device provided in the above embodiments, the embodiments of the present invention provide specific application examples of the substation automation device. The substation automation device provided by the embodiment of the utility model realizes the functions of TCP (Transmission Control Protocol) network remote Control and data acquisition, can be managed by using management software, and can also be accessed to the own management software through secondary development. The equipment supports AT (Attention) instructions, Modbus TCP and Modbus RTU protocols, is convenient to access to management systems with different protocol standards, simultaneously supports AES128 data encryption, and is suitable for being used in occasions with high safety performance requirements. In practical applications, the control steps of the substation automation device are as follows: step 1, initialization: the master station opens the management software, and the station end equipment and the master station equipment establish a TCP link; step 2, acquiring the relay state of the station terminal equipment; step 3, selecting station end equipment to be operated; step 4, starting the test and sending a control command; and 5, detecting the action of the relay at the station end, returning the action result to the station end and displaying the action result to the management software.

Based on the above process, the present embodiment describes in detail that the control software sends an instruction through the Modbus TCP/RTU protocol to control the relay action and read the state of the input interface in real time, and the two protocol formats are adaptive, specifically, refer to the instruction code table shown in table 1 and the register address list shown in table 2:

TABLE 1

TABLE 2

Because of the concept of Modbus TCP having no address, the address in the Modbus RTU is not limited by the devices, and the RTU protocol format is exemplified below, with reference to the transmit code of the read coil (0x01) and the return code of the read coil (0x01) shown in table 3, and the transmit code of the write single coil (0x05) shown in table 5 and the return code of the write single coil (0x05) shown in table 6:

TABLE 3

TABLE 4

TABLE 5

TABLE 6

In actual use, a user firstly inserts a network cable head into an Internet port of a device, then configures an IP (Internet Protocol) address of the device, an IP address and a port of a master station by using configuration software, and then the master station opens a management software station end to establish connection with the master station, so that the device is controlled by using master station management software. The transformer substation automation device provided by the embodiment of the utility model adopts the ARM core, the industrial chip equipment is stable, the encryption communication is safe and reliable, the power supply problem of the remote management equipment is solved, the transformer substation automation device can be applied to various application scenes, the structure is simple, the cost is low, and the popularization is easy. The substation automation device provided by the embodiment of the utility model at least has the following characteristics:

(1) and a high-performance 32-bit STM-ARM core is used, so that the processing speed is high.

(2) The ET1200 Ethernet chip supports AES128 encryption communication, and uses Ethernet port and TCP/UDP communication, and the communication is safe and reliable.

(3) The remote connection, state reading and control of the station-side equipment are completed through the human-computer interface interactive interface, the configuration management interface is customized and developed according to the use habits of the user, and the method is simple and easy to use.

(4) The device is provided with battery network configuration parameters and is stored in a power-down mode, and resetting is not needed when the device is electrified.

(5) Real-time, inching, time delay, interlocking and other control modes.

(6) And saving the state of the relay in a power-down state and recovering the state of the relay in a power-on state.

As for the substation automation device provided in the foregoing embodiment, an embodiment of the present invention provides a substation automation system, and referring to a schematic structural diagram of a substation automation system shown in fig. 5, the substation automation system includes the substation automation device 100 provided in the foregoing embodiment and a designated association terminal 200 communicatively connected to the substation automation device 100.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the substation automation system described above may refer to the corresponding process in the foregoing embodiment, and is not described herein again.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The transformer substation automation device is characterized by comprising a signal conversion module, a remote communication module and a data processing module which are sequentially connected, wherein the signal conversion module is in communication connection with a specified associated terminal; wherein the content of the first and second substances,

the signal conversion module is used for receiving an operation instruction issued by the appointed associated terminal, converting the operation instruction into a first level signal and sending the first level signal to the remote communication module, wherein the operation instruction at least comprises a restart instruction; the remote communication module is used for receiving the first level signal and sending first control data corresponding to the first level signal to the data processing module; the data processing module is used for receiving the first control data and executing tasks corresponding to the first control data, wherein the tasks at least comprise a restart task;

the data processing module is also used for generating execution result data of the task and sending the execution result data to the remote communication module; the remote communication module is used for receiving the execution result data and sending a second level signal corresponding to the execution result data to the signal conversion module; the signal conversion module is further configured to receive the second level signal, convert the second level signal into a result feedback instruction, and send the result feedback instruction to the designated associated terminal.

2. The substation automation device of claim 1, wherein the signal conversion module comprises a data interface, a voltage conversion chip and a PHY chip connected in sequence; wherein the content of the first and second substances,

the data interface is used for receiving an operation instruction issued by the appointed associated terminal; the voltage conversion chip is used for increasing the transmission distance of the operation instruction; the PHY chip is used for converting the operation instruction into a first level signal and sending the first level signal to the remote communication module;

the PHY chip is further configured to receive the second level signal and convert the second level signal into a result feedback instruction; the voltage conversion chip is also used for increasing the transmission distance of the result feedback instruction; and the data interface is used for sending the result feedback instruction to the appointed associated terminal.

3. The substation automation device of claim 2 wherein the data interface comprises an RJ45 interface.

4. The substation automation device of claim 1 wherein the remote communication module comprises an ET1200 ethernet chip;

the ET1200 ethernet chip is configured to analyze the first level signal to obtain first control data.

5. The substation automation device of claim 4 wherein the ET1200 ethernet chip is configured with an AES encryption algorithm;

the ET1200 ethernet chip is further configured to encrypt the execution result data using the AES encryption algorithm to obtain a second level signal.

6. The substation automation device of claim 1 wherein the data processing module comprises an ARM chip and a peripheral circuit connected to the ARM chip, the peripheral circuit comprising at least one relay;

the signal conversion module is also used for receiving a state query instruction issued by the appointed associated terminal, converting the state query instruction into a third level signal and sending the third level signal to the remote communication module; the remote communication module is used for receiving the third level signal and sending second control data corresponding to the third level signal to the data processing module; the data processing module is used for receiving the second control data and determining the current state of the relay corresponding to the second control data;

the data processing module is also used for generating relay state data corresponding to the current state and sending the relay state data to the remote communication module; the remote communication module is used for receiving the relay state data and sending a fourth level signal corresponding to the relay state data to the signal conversion module; the signal conversion module is further configured to receive the fourth level signal, convert the fourth level signal into a state feedback instruction, and send the state feedback instruction to the designated associated terminal.

7. The substation automation device of claim 4 further comprising a storage circuit connected to the ET1200 Ethernet chip for storing the first control data and/or the execution result data.

8. The substation automation device of claim 4 further comprising a clock source connected to the ET1200 Ethernet chip, the clock source configured to provide a clock pulse signal to the ET1200 Ethernet chip.

9. The substation automation device of claim 1 further comprising a power indicator light connected to the data processing module.

10. A substation automation system comprising a substation automation device according to any of the claims 1 to 9 and a designated associated terminal communicatively connected to the substation automation device.